NDLI: Joint land-sea seismic survey and research on the deep structures of the Bohai Sea areas

Content Provider	Springer Nature Link
Author	Hao, Tianyao You, Qingyu Liu, Lihua Lv, Chuanchuan Xu, Ya Li, Zhiwei Zhao, Chunlei Zheng, Yanpeng Liu, Chenguang Han, Guozhong
Copyright Year	2013
Abstract	This paper presents the survey and research work of two land-sea profiles in the Bohai Sea, China, carried out in 2010–2011, including the seismic sources on land and in the sea, the ocean bottom seismographs (OBS) and their recovery, the coupling of OBS and the environment noise in sea area, the data quality of OBSs, and the result of data analysis. We focused on the investigation of crustal structures revealed by the two NEEW-trending joint land-sea profiles. In combination with the Pn-velocity distribution and gravitymagnetic inversion results in the North China Craton, we propose that the undulation of the Moho interface in the Bohai and surrounding areas is not strong, and the lithospheric thinning is mainly caused by the thinning of its mantle part. The research result indicates that obvious lateral variations of Moho depth and seismic velocity appear nearby all the large-scale faults in Bohai Sea, and there is evidence of underplating and reforming of the lower crust by mantle material in the Bohai area. However, geophysical evidence does not appear to support the “mantle plume” or “delamination” model for the North China Craton destruction. The crustal structure of the Bohai Sea revealed “a relatively normal crust and obviously thinned mantle lid”, local velocity anomalies and instability phenomena in the crust. These features may represent a combined effect of North China-Yangtze collision at an early stage and the remote action of Pacific plate subduction at a late stage.
Starting Page	13
Ending Page	24
Page Count	12
File Format	PDF
ISSN	0253505X
Journal	Acta Oceanologica Sinica
Volume Number	32
Issue Number	12
e-ISSN	18691099
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-01-04
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	seismic survey profiles velocity anomaly crustal structure lithospheric thinning Bohai Sea Oceanography Climatology Ecology Engineering Fluid Dynamics Marine & Freshwater Sciences Environmental Chemistry
Content Type	Text
Resource Type	Article
Subject	Aquatic Science Oceanography

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